documentclass[10pt,a4paper]{report}
\usepackage[latin1]{inputenc}
\usepackage{palatino}
\usepackage{lipsum}
\usepackage{pgfplots}
\usepgfplotslibrary{dateplot}

\begin{document}
\setlength{\parindent}{0ex}

\lipsum[1]\vspace*{2ex}

\begin{tikzpicture}[trim axis left]
	\begin{axis}[
			scale only axis, % The height and width argument only apply to the actual axis
			height=5cm,
			width=\textwidth,
			grid=both,
			max space between ticks=40, % To control the number of major ticks
			minor x tick num=4,
			minor y tick num=4,
			major tick length=0.15cm,
			minor tick length=0.075cm,
			tick style={semithick,color=black},
			date coordinates in=x,
			xticklabel=\day.\month.
		]

		\addplot[color = black, mark=diamond*] coordinates {
				(2009-08-07, 98)
				(2009-08-09, 92)
				(2009-08-12, 94)
				(2009-08-15, 87)
				(2009-08-19, 82)
				(2009-08-26, 65)
				(2009-08-29, 54)
				(2009-09-02, 31)
			};
	\end{axis}
\end{tikzpicture}

\vspace*{2ex}\lipsum[2]

\end{document}
